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CORE Maxi
Installation, Operation & Maintenance
Instructions
Please leave this instruction booklet with the end user as it contains important warranty,
maintenance and safety information
Read this manual carefully before commencing installation.
This manual covers the following products:
CORE Maxi135
CORE Maxi235
CORE Maxi175
CORE Maxi275
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Table of Contents
Summary of Contents for Core Maxi135
- Page 1 Instructions Please leave this instruction booklet with the end user as it contains important warranty, maintenance and safety information Read this manual carefully before commencing installation. This manual covers the following products: CORE Maxi135 CORE Maxi175 CORE Maxi235 CORE Maxi275...
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Page 2: Table Of Contents
CONTENTS 1 PRODUCT OVERVIEW ....................3 2 WARNINGS ........................4 3 CHECKLIST ........................5 4 PUMPED MEDIUM ......................6 5 INSTALLATION ......................... 7 6 ELECTRICAL INSTALLATION ..................10 7 UNIT SETTINGS ......................13 8 FAULT DIAGNOSIS ......................17 9 PUMP CHARACTERISTICS .................... 20 10 COMPONENT LIST ...................... -
Page 3: Product Overview
PRODUCT OVERVIEW Product Description The Maxi is a fully automatic heating/chilling system filling device and is suitable for the water management in domestic and commercial heating and cooling systems. Each unit is supplied fully commissioned and should require no on site commissioning, if purchased with the appropriate expansion vessel. -
Page 4: Warnings
WARNINGS • This appliance must not be used for any other application without the written consent of Smith Brothers Stores Ltd. • This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. -
Page 5: Checklist
CHECKLIST IMPORTANT: With the Maxi removed from its packaging check for any damage prior to installation. If any damage is found contact Smith Brothers Stores Ltd within 24 hours of receipt. Item Description Maxi Unit Cold Water Valve Your product may vary slightly from the illustrations above. -
Page 6: Pumped Medium
PUMPED MEDIUM Pump medium can be pure water or a mixture of pure water and glycol, • which is appropriate for central heating. Water must meet water quality standard VDI 2035. The medium must be free from aggressive or explosive additives, free •... -
Page 7: Installation
INSTALLATION All Smith Brothers Stores Ltd products should be installed by a competent person with regard to the relevant requirements of the Health and Safety Regulations, Building Regulations, IEE Regulations, Water Supply (Water Fittings) Regulations, Water By-laws (Scotland) and any other by-laws or planning requirements. - Page 8 Important note: The expansion vessel air/nitrogen charge must be set to the same pressure as the cold fill pressure of the system. If the installed height of the expansion vessel is different to that of the unit then please contact our technical department who will advise on the air/nitrogen charge required. A suitably sized pressure relief/safety valve MUST be fitted on all sealed systems.
- Page 9 Diagram of a typical installation Boiler Maxi Pressurisation Unit Tundish Boiler Drain Please note that for the purpose of clarity, system valves are not shown. The expansion vessel should be installed in the most neutral point in the system regarding pressure and temperature.
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Page 10: Electrical Installation
ELECTRICAL INSTALLATION The Maxi requires a permanent 230V 50Hz 1 phase fused supply rated at 10 Amp. The unit is internally fused at 8 Amp Time Delay. The unit also incorporates two BMS relays offering volt free contacts for the remote indication of low or high pressure conditions within the system. - Page 11 Electrical diagram (when not at fault) Electrical data Supply: 230V 1 ph 10 Amp. • Full Load Current: 5.6 Amp. • Fuse Rating: 8 Amp Time Delay. • BMS Relays and Boiler/Chiller Relays: Volt Free Contacts rated at 250 VAC. •...
- Page 12 Caution Danger to life! Incorrect installation and incorrect electrical connection can be life- threatening. Electricity hazards must be ruled out. Installation and electrical connection may only be performed by qualified personnel and • in accordance with the applicable regulations (e.g. IEC, VDE, etc.)! The type of current and voltage must comply with the data on the rating plate.
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Page 13: Unit Settings
UNIT SETTINGS Keypad functions System data This button is used primarily to scroll through the various settings of the unit. Repeatedly pressing this button will cycle through each setting (see page 15-16 for information on each of these settings). Pressing this button whilst the unit is in service mode will again cycle through each setting, but in this mode the settings can now be adjusted When the unit is in service mode this button is used to increase... - Page 14 Status display The top line of the display on the Maxi will provide information on the current status of the unit as well as the system that it is managing, providing information on any potential issues and/or faults as and when they occur. The following status messages will be displayed on the unit based on current conditions: Pressure correct...
- Page 15 Adjusting settings The settings on the Maxi can be adjusted on site by following the below steps: Step 01: Press and hold the “service mode” button for approximately 8 seconds. Step 02: The display will indicate that you are now in service mode. You can then release the button.
- Page 16 Lvl 1 Leak Affects the flood protection facilities of the unit, if the Maxi does not Alert Time register a pressure increase in the system whilst filling for the period set here then it will assume that there must be a leak in the system and alarm, the longer the Dry Run setting (which is calculated in minutes) the less responsive the flood protection.
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Page 17: Fault Diagnosis
FAULT DIAGNOSIS The Maxi has a full self-diagnostic microprocessor unit which continually self-checks its operation. If an internal fault is diagnosed then this will be displayed on the screen in place of the usual status display (described on page 14). The message displayed will directly relate to the issue that the unit has registered and will aid in resolving the fault. - Page 18 Status/fault conditions continued FAULT INDICATION CAUSE RESOLUTION The float switch is incorrectly registering a low Possible water level despite the tank having a sufficient “LOW WATER LEVEL” faulty float volume of water. Please contact helpline as the switch. float switch will need to be replaced (refer to page 21-22 for part details).
- Page 19 Status/fault conditions continued FAULT INDICATION CAUSE RESOLUTION The sensors use the voltage as a baseline to measure pressure. If the incoming voltage supply to the unit is fluctuating then this can cause the unit to go to “sensor failure”. If the pressure readings on the display are fluctuating, or the voltage is unstable when measured with a multimeter then there is likely an issue with the...
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Page 20: Pump Characteristics
PUMP CHARACTERISTICS Performance Range Product Data CORE Maxi135 & Maxi235 CORE Maxi175 & Maxi275 Data Dimensions 169 x 132 x 225mm 179 x 138 x 258mm (Height x Width x Length): 230 Volt | 240 Volt 230 Volt | 240 Volt... -
Page 21: Component List
COMPONENT LIST Any components within the Maxi that may require replacing have been listed in this section, along with their respective part codes. If any part needs replacing which is not listed here, please contact our helpline for assistance. - Page 22 VALVE COMPLETE WITH (½”) (MX1100002) CASING - BACK PANEL (MX1000001) CASING - BOTTOM PANEL (MX1000002) CASING - FRONT PANEL (Maxi135 & Maxi235) (MX1000003) CASING - FRONT PANEL (Maxi175 & Maxi275) (MX1000004) CASING - LEFT SIDE PANEL (MX1000005) CASING - PCB (BACK)
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Page 23: Technical Specification
TECHNICAL SPECIFICATION Pump Model CORE CORE CORE CORE Maxi135 Maxi235 Maxi175 Maxi275 Warranty 2 years General Conformity certification UKCA/CE Sealed system capacity Up to 300,000 litres Mounting Wall & floor mount Pump control system Features Intelligent control interface ... -
Page 24: Maintainance & Service
MAINTAINANCE & SERVICE Before carrying out maintenance, cleaning and repair work, disconnect the system from the power supply and secure it against being switched on again by unauthorized persons. At high water temperatures and system pressures, wait for the pump to cool down beforehand. - Page 25 12.2 REMOVING THE PCB (CONTROL) WITH SENSOR In the unlikely event of either a sensor or PCB (control) failure, it may be necessary to replace the controls assembly. If this is the case then the unit must first be isolated mechanically and electrically, and then drained down by slackening the inner system valve nut, allowing any water in the internal pipework of the unit to drain out.
- Page 26 Step 04: The two hex spacers in the top corners and the two M3 nuts in the bottom corners of the PCB (control) should be unscrewed and the earth tab (D) removed from the bottom right pin. Care should be taken when fitting a replacement PCB (control) that the earth tab (D) is reinstated in the previous position to ensure the unit remains correctly earthed.
- Page 27 Step 02: All connections on the back of the PCB (pump) (located at the bottom of the PCB casing) should then be disconnected. These are the ribbon cable (A) and pump (B) connections. It should also be noted where each connection is fitted on the PCB (pump) as they are being disconnected.
- Page 28 12.4 Removing a pump In the unlikely event of a pump failure, it may be necessary to replace the component. If this is the case then the unit must first be isolated mechanically and electrically, and then drained down by slackening the inner system valve nut, allowing any water in the internal pipework of the unit to drain out.
- Page 29 Step 04: Take note of the wiring connections present within the electrical enclosure, specifically the earth, live, and neutral wires coming into the pump from the supply cable. Remove the live and neutral wires from their respective terminals and remove the fitting holding the earth wire tab in place using a suitable tool.
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Page 30: The Warranty
THE WARRANTY Congratulations on purchasing a Smith Brothers Stores Ltd product. We are confident this product will provide many years of trouble free service as all our products are manufactured to the very highest standard. The Smith Brothers Stores Matrix Maxi is warrantied to be free from defects in materials or workmanship for 2 years from the date of purchase. - Page 32 Smith Brothers Stores Limited reserves the right to amend specifications without notice. CORE is a registered trademark owned by Smith Brother Stores Ltd Registered Office, Unit V2 Winchester Avenue Blaby, Leicester. LE8 4GZ www.sbscore.co.uk...
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